Tuck creasing or marking attachment for sewing-machines



(No ModeL) J. M. GRIEST. TUUK OREASING OR MARKING ATTACHMENT FOR SEWINGMACHINES. No. 394,968. Patented Dec. 25, 1888.

N. PETERS. Pnnm-uma m m, Wanh ngmn. D.c.

UNITED STATES PATENT ()EETCE.

JOHN M. GRIEST, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE SINGER MANU-FACTURING COMPANY OF NETY JERSEY.

TUCK CREASING 0R MARKlNG ATTACHMENT FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 394 968, dated December25, 1888.

Application filed December 27, 1887. Serial No. 259,093. (No model.)

To all whom it may concern:

Be it known that 1, JOHN MJGRIEST, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Tuck Jreasers or Markersfor Sewing-Machines, of which the following is a specification,reference being had therein to the accompanying drawings.

The object of my invention is to provide a convenient, strong, andsubstantial tuck creasing or marking attachment for sewingmachines, inwhich the creasing is effected by two pinching-levers operating on thegoods on opposite sides of an npwardly-projecting lip on the base-plateor lower arm of the attachment.

In the drawings, Figure l is a perspective view of my improvedattachment. Fig. 2 is a plan view of the same. Fig. 3 is a longitudinalsection on line 3 3, Fig. 2,with the markinglever depressed. Fig. l is across-section on line 4 4, Fig. 2. Fig. 5 is a detail view to show theconnection between the operating-lever and the marker-lever. Fig. 6 is adetail section on line 6 (i, Fig. 2.

A denotes a support or bracket, the upturned portion a of which isprovided with a a slotted horizontal part, a, adapted to be secured toan attachmentrholding bar such as is shown by my application, Serial No.259,090, filed simultaneously herewith.

B is the body-bar of the attachment, passing through the support A andhaving its forward end, b, flattened and provided with anupwardly-projecting creasing-lip, b, the rear end 19 of the said barbeing turned upward and backward and bored to form a socket for thereception of the rear end 0 of the marker-carrying lever C, to theforward end of which latter are pivoted two small pinching or creasinglevers, 0, having lugs 0 connected by a retracting -spring, 0 A stop, 0,formed on the part of the lever C to which the pinching-levers arepivoted, is arranged to be engaged by the tail portions 0 of the saidpinching-levers, and thus limit the return movements thereof effected bythe spring 0 D is the operating-lever, pivoted to a small post, on thebracket or support A, the said lever having a ing, (Z, arranged to beengaged by the lower end of the needle-bar of the machine. The lever l)is provided at its forward end with perforated lugs (1 (I through whichpasses the longer arm of a hook, c, the shorter arm of which impingesagainst the upper side of the mark'cr-carrying lever A spiral sping, c,interposed between a pin, e entering the longer arm of the hook c, andthe lug (Z forms a yielding connection between the said hook and thelever I), so that if the shorter arm of the said hook should force themarker-carrying lever or arm downward as far as it is desirable for itto go before the needle-bar should have reached the lowest point of itsdescent the spring 9' will be compressed, and a sudden shock or jar willthus be prevented.

The hook e is free to be turned in the lugs d d of the operating-leverD, so that if it is desired to disconnect the said operating-lever fromthe marker-carrying lever C to suspend the movements of the latter it isonly necessary to turn the said hook to. the position shown by dottedlines in Fig. 3, when it will be, entirely clear of the said lever C. Atorsional spring, 6 on the rear end 19 of the bar B serves to lift thelever C after it has been depressed.

The rear end 0 of the lever C is preferably held in a socket at the endI) of the bar B by a pin, f, which in the present instance is merely theupturned end of a small rod, F, the forward end of which extends overthe lip 19, and thus serves as a slight presser to hold the passingfabric 011 the said lip. The pin f fits rather loosely in the hole inthe end 0 of the lever C, so that the said lever will be free to movedownward when depressed by the needle-bar, but the said pin fits closelyenough in said hole to serve as a stop to limit the upward movement ofthe said lever when the latter is raisedby the spring 0 G is an edgeguide secured to a bar, g, passing through the support or bracketA andadjustable therein, the said edge guide being steadied by the bar B,which passes freely through said guide. The bar B is also free to beadjusted through the support or bracket A when not clamped thereto, sothat the upper and lower creasing devices, which are both movable withsaid bar, maybe adjusted from or toward the needle of the machine tovary the width of the tucks made by folding the fabric on the creaseproduced by the said creasing devices, the said support or bracketbeing, of course, stationary relative to the line of the stitches madeby the machine. The bars B and g, which are preferably provided withflattened lower faces, are secured to the support or bracket A by aclampingplate, H, provided with threaded pins 71, extending up throughthe said support or bracket A and receiving set-nuts 71 ,b v which thecla1nping-plate may be forced upward against the lower flattened facesof the said bars to hold them in place.

When the creasing or marking attachment 2o secured in place on asewing-machine and the machine set in motion, a vibrating movementwillbe imparted to the marker-carrying lever by the i'leedle-bar ot' themachine and the retractingspring c5. 'hen the pinchinglevers c strikethe flattened forward end, I), of the bar B on opposite sides of the lip1), they will be forced toward each other, pinching the fabric lying onsaid lip to form a mark or crease on which the said fabric will befolded to form the next tuck parallel with the one being sewed.

I claim 1. In a tuck creaser or marker for sewingmachines, thecombination, with a lower creas- 3 5 ing device and a marker-carryingarm or lever, of two independent pinching or creasing levers pivoted tothe forward end of the said marker-carrying lever, a singleretractingspring for the said pinching-levers, and means for operatingthe said marker-carrying lever. :2. In a tuck-creaser forsewii'ig-machines, the combination, with the bracket or support A, ofthe body-bar B, having the flattened end I), provided with the lip b andthe rearwardlyturned hollow end b the marker-carrying lever C, pivotedin the said hollow end, the two independent pinching or creasing leversc, the retracting-springs c and l), and the operating-lever D.

In a tuck creaser or marker for sewing machines, the combinatioi'i, withthe lower creasing device and the marker-carrying lever (1, of theOPBPELtiIlg-lGVOl' .D, having the perforated lugs d d", the reversiblehook 0, one arm of which passes freely through said lugs and the otherarm of which impinges against the said lever C, the spiral spring e, andthe pin e 4:. In a tuck creaser or marker for sewing machines, thecombination, with the body-bar B, having a creasi ng-li p at its forwarden d and having at its rear end a longitudinally-socketed portion, D ofthe marking'lever the rear end, c, of which has a bearing in the saidsocketed portion 5 the spring-rod F, having an upturned rear end to forma pin which retains the said end 0 in its socket, and having its forwardend extended over the said creasing-lip to serve as a presser, and meansfor operating the said lever 5. In a tuck creaser or marker for sewingmachines, the combination, with the creasing devices and the bracket orsupport A, of the bars B and g, passing through said support, the edgeguide l, steadied by the said bar B, which passes through the saidguide, the clamping-plate H, having the threaded pins 71', and theset-nuts h.

6. In a tuck creaser or marker for sewingmachines, the con'lbination,with the markinglever C and its lifting-spring, of the operating-leverD, carrying at its forward 'end the reversible hook e to impinge againstthe said lever C, and the support or bracket A, having the post A towhich the rear end of the said lever D is pivoted.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN M. GRIEST. lVitnesses:

HENRY CALVER, EwELL A. DICK.

